Q: What are the prime factors of the number 513,471?

 A: 3, 7, 499

Why are those the prime factors of the number 513,471?

Prime factors are the prime numbers that can be multipled together to equal the original number. You find the factors by dividing by prime numbers. It is best shown by creating a Factor Tree.

Factor Tree for the number 513,471

513,471
Factor Arrows
3171,157
Factor Arrows
724,451
Factor Arrows
73,493
Factor Arrows
7499

The numbers in bold above are the prime factors. If there are multiples, you only count them one time. This leads us to our prime factors of:

3, 7, 499

We can check our work by multiplying all of the prime factors together: 3 x 7 x 7 x 7 x 499 = 513,471

This can also be written as 31 x 73 x 4991 = 513,471

If you would like to know more, or need additional explanation, please review our prime factorization explanation.


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